Volcanic arcs fed by rapid pulsed fluid flow through subducting slabs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F12%3A00000022" target="_blank" >RIV/00025798:_____/12:00000022 - isvavai.cz</a>

Result on the web

<a href="http://www.nature.com/ngeo/archive/index.html" target="_blank" >http://www.nature.com/ngeo/archive/index.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/ngeo1482" target="_blank" >10.1038/ngeo1482</a>

Result language

angličtina

Original language name

Volcanic arcs fed by rapid pulsed fluid flow through subducting slabs

Original language description

At subduction zones, oceanic lithosphere that has interacted with sea water is returned to the mantle, heats up during descent and releases fluids by devolatilization of hydrous minerals. Models for the formation of magmas feeding volcanoes above subduction zones require largescale transport of these fluids into overlying mantle wedges. Fluid flow also seems to be linked to seismicity in subducting slabs. However, the spatial and temporal scales of this fluid flow remain largely unknown, with suggestedtimescales ranging from tens to tens of thousands of years. Here we use the Li?Ca?Sr isotope systems to consider fluid sources and quantitatively constrain the duration of subduction-zone fluid release at ~70 km depth within subducting oceanic lithosphere, now exhumed in the Chinese Tianshan Mountains. Using lithiumdiffusion modelling, we find that the wall-rock porosity adjacent to the flowpath of the fluids increased ten times above the background level. We show that fluids released by

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DD - Geochemistry

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Geoscience

ISSN

1752-0894

e-ISSN

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Volume of the periodical

5

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

4

Pages from-to

489-492

UT code for WoS article

000307098400019

EID of the result in the Scopus database

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